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Fencer Vulns
medium 6.9

CVE-2025-52586 json

EG4 Electronics EG4 Inverters Cleartext Transmission of Sensitive Information

published 2025-08-08 15 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-23994

cvss
6.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 0%
public exploits
0
none known

Summary

The MOD3 command traffic between the monitoring application and the inverter is transmitted in plaintext without encryption or obfuscation. This vulnerability may allow an attacker with access to a local network to intercept, manipulate, replay, or forge critical data, including read/write operations for voltage, current, and power configuration, operational status, alarms, telemetry, system reset, or inverter control commands, potentially disrupting power generation or reconfiguring inverter settings.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-25-219-07 updated cvss 6.9

EG4 Electronics EG4 Inverters (Update B)

  • EG4 Electronics EG4 12kPV EG4 Electronics EG4 18kPV EG4 Electronics EG4 6000XP EG4 Electronics EG4 12000XP EG4 Electronics EG4 Flex 18 EG4 Electronics EG4 Flex 21
    +1 more products
    EG4 Electronics EG4 GridBoss
    affected: mitigation “CVE-2025-52586: EG4 has released a new firmware that encrypts communication between the dongle and server. EG4 recommends that users update their firmware following the guidance outlined here.” eg4electronics.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
15 mo ago

Exploit prediction

0.09% chance of exploitation in the next 30 days, higher than 0% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
CNA 4.0 7.5 CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
CNA 4.0 7.5 CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • EG4 Electronics EG4 12kPV
  • EG4 Electronics EG4 18kPV
  • EG4 Electronics EG4 Flex 21
  • EG4 Electronics EG4 Flex 18
  • EG4 Electronics EG4 6000XP
  • EG4 Electronics EG4 12000XP
  • EG4 Electronics EG4 GridBoss

Classification

Weakness
  • CWE-319 Cleartext Transmission of Sensitive Information

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.